Roller for roller cotton-gins.



I. M EURLING. ROLLER FOB ROLLER COTTON GINS.

APPLICATION FILED MAR. '7, 1911.

Patented Feb. 16, 1915.

mvgmoa 44mm? BY r WITNESSES ATTORNEYS *HE NORRIS PETERS C0,,#HOTO-LITHOU WASHINuIUN. D. C

ASSIGNOli'. TO DUPLEX GIN COMPANY, OF NEW YORK, N. Y., A CORPORATION OFARIZONA.

ROLLER FOR ROLLER COTTON-GINS.

of the United States of America, and a resident of Brooklyn, county ofKings, and State of New York, have invented certain new and usefulImprovements in Rollers for Roller Cotton-Grins, of which the followingis a specification, reference being had to the accompanying drawings,forming a part thereof.

My invention relates particularly to the peripheral portion of therollers, in which the friction surface for direct coaction with thefibers is contained, and consists, first, in disposing the frictionsurface throughout in a plurality of levels, the specific form of thesurface preferably comprising alternate helical bands or strips disposedat two different levels; and second, in constructing the peripheralportion of the roller of a plurality of helically disposed stripscomposed of material comprising rubber and woven fabric, the alternatestrips being of fine and coarse material respectively.

The main object of my invention is to increase the frictional hold ofthe surface of the roller upon the cotton fibers so as to in crease theeflicienoy thereof, and a further object of my invention is to reducethe expense of manufacture of such rollers, the walrus hide and othermaterial commonly usedat the present day for the peripheral portion ofthe rollers being very expensive.

In order that my invention may be fully understood, I will now proceedto describe an embodiment thereof, having reference to the accompanyingdrawings illustrating the same, and will then point out the novelfeatures in claims.

In the drawings: Figure 1 is a view in side elevation of a ginningroller constructed in accordance with my invention. Fig. 2 is a view intransverse section therethrough. Fig. 3 is a perspective view of aportion of the peripheral part of the roller.

The core 5 of the roller is of any suitable nature, the exterior thereofbeing of the cylinder form shown. The peripheral portion of the rollercomprises a plurality of substantially rectangular strips 67 helicallywound around the said core. The strips 7 are of slightly greaterthickness than the strips 6 whereby the outer surfaces Specification ofLetters Patent.

Application filed March 7, 1911.

Patented Feb. 16, 1915. Serial No. 612,874.

of the said strips the outer surfaces of the strips 6. The perlpheralfriction surface of the roller will in this way be formed in twodifferent levels and the bands or the strips of the surface at eachlevel will follow helical paths.

The material of which the strips 6 and 7 are preferably composed is thatcommonly own as steam packing. It comprises a plurality of layers ofwoven textile, such as cotton cloth, surrounded with, and embedded in, acomposition having rubber as a basis. Thisclass of materialcomes in manyforms, that is to say, the woven textile fabric is of various degrees offineness, the finer textile fabric resulting also in a harder materialand the coarser fabric resulting in a softer material, and in accordancewith one feature of my invention I form the alternate strips of coarseand fine material, the strips 6 having the lower level being composed ofa relatively hard, fine material, while the strips 7 (the surfaces ofwhich project radially beyond the surface of composed of a relativelysoft, coarse material. These strips are conveniently out from materialmade in sheets, the woven fabric being laid in the plane of the sheets,and after the strips have been cut therefrom I preferably lay themedgewise on the core of the roller so that the'plane of the fabric liesin radial lines with respect to the roller. Thus the out edges of thefabric constitute the friction surface, the result being the formationof a nap-like surface which is particularly suitable for ginningpurposes. The coarse and relatively soft radially extending portionsquickly become worn so that this tendency to nap-like form is increased,the result being a high degree of efficiency otherwise quite difficultto attain.

It is usual in ginning rollers of this description to cut helicalgrooves in the ginning surface of the roller, and such grooves 8 may bereadily cut in the faces of the strips in the present instance thedirection of such grooves being preferably opposite to the direction ofthe strips as is shown in the drawings.

It will of course be understood that the strips are suitably secured inany desired manner to the core of the roller.

What I claim is:

1. A ginning roller for roller cotton gins comprising a cylindricalcore, and a pluralthe strips 6) being.

7 project radially beyond ityjof strips disposed V and helically Woundaround the said core,

v the alternate strips being composed of a mafothe'r level.

' face of. the latterzsaid strips being arranged terialcomprising'rubber and coarse WOVGII' fabric, and a material comprisingrubber and fine Woven fabrlc.

2. Aginningroller .forroller cotton comprising a cylindrical core, and"-a. plurality of strips disposedside byside thereon and helically Woundaround the said core, the; alternate strips beingcomp'osed ofa materialcomprising rubber and coarse Wovenfabric, the outer surface of which isarranged'at one level, and a-material comprising rubber and fine Wovenfabric, the outersurfaceof which is arrangedat an- A ginmngroller forroller cotton gins comprising a cylindrical core, and a' plurality ofstrips disposed side by side thereon and hel'ically a wound around thesaid core, the alternate strips being composed of a material; comprisingrubber and coarse woven fabric, and a material comprising rubber andfine Woven fabric, the Eouter sur- Copi es ot this patenting he obtainedfor side by sid thereon toproject radially beyond the outer surface ofthe former said strips.

4., A ginning roller for roller cotton gins comprising a cylindricalcore having helically Wound thereon a flat faced strip and thinner flatfaced strip of harder material longitudinally filling the helical spacesbetween adj acent layers of said first strip, the

roller thus, covered having cut therein a hellric of unlike degrees ofhardness, with the plane of the fabric radiallydisposed on said rollerand with the softer ofv said layers P thicker than the other, the rollerthus covered having cut therein a helical groove'w-ith the pitch thereofrunning in the opposite d1- rection to that of said covering layers.

. IVAR MEURLING.

Witnesses:

LYMAN S; ANDREWS J r.,

"F; B GnAvEs.

five c entsieiacmby adqressingthe Commissioner 0! Patents, j ;Was11ngton, D. 0; s 1

